Continuity mistake: When the phone rings as Beth paints, Beth puts her roller in the tray and goes to answer the phone. When she returns the roller is in a different position than it was before.
Continuity mistake: When Michael Douglas puts on his headphones to listen to the tape in his den, he puts the headphone with the cord on his left ear. When his wife startles him the cord is on his right ear.
Answer: Because she is insane! And she picked the lock. By murdering the innocent pet bunny rabbit Alex was sending a message. She won't be ignored! She's just letting Dan know that she can get to him, or in this case his family (daughter's pet), anytime she wants to. He's not safe.
Alan Keddie